Trying to figure out which private certificate authority to generate keys and certificates for signing our software

So I am making some software that allows me to is going to help with private network connection, which will only allow certain devices to connect to it by having this chip with the software in it. however, I am trying to understand private certificate authority and which is user-friendly and reasonably easy to set up. I've been looking into ones like EJBCA and Dogtag but as I said, I don't fully understand all of this and was looking for …

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